20555343 Wiring Harness | Genuine Volvo Penta Part

🔧 Product Description

This genuine Volvo Penta wiring harness is an OEM service component used in the EDC IV Engine Wiring Harness. It is manufactured to the original Volvo Penta dimensional, material and interface requirements for the documented Volvo Penta TD/TAD5-7 generator diesel application. Technical identification: Engine-side EDC IV harness, nominal length 2.50 m. In service, it interconnects the specified sensors, actuators, control units and power circuits using the original connector pinout, branch lengths and protective routing. Selection must be confirmed by OEM part number 20555343, the exact model/product number, serial number and installed assembly configuration.

🚤 Compatibility

• Engine Family: TD, TAD
• Serial Range: TD520GE, TAD520GE:Electrical system EDC IV. SN-0935273, TD720GE, TAD720GE, TAD721GE, TAD722GE:Electrical system EDC IV. SN-0935273, L=2,50m

Full model list at the end of this description.

⚙️ Key Features

• Genuine Volvo Penta OEM wiring harness
• OEM part number 20555343
• Technical distinction: Engine-side EDC IV harness, nominal length 2.50 m

🔌 Function

Interconnects the specified sensors, actuators, control units and power circuits using the original connector pinout, branch lengths and protective routing. Match connector keying and terminal positions, protect the harness from heat/chafing and verify continuity, insulation and voltage drop before commissioning.

⚠️ Common Signs of Failure

• Instruments, alarms or engine control dropping out intermittently
• Fault codes that change or clear when the harness is moved
• Hard starting, or the engine stopping without warning
• Chafed, cracked or heat-hardened insulation where the loom passes a hot or sharp point
• Corroded terminals and green deposits inside the connectors

🛠️ Service Notes

• Listed for TD520GE, TAD520GE, TD720GE, TAD720GE, TAD721GE and TAD722GE with EDC IV electrical system up to serial number 0935273 - later engines take a different harness
• The harness is 2.50 m long, so confirm the run between engine and control panel before ordering
• Check earth and supply voltage drop before condemning the harness; a poor earth gives the same symptoms

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta TAD520GE, TAD520VE
• Volvo Penta TAD530GE MECH, TAD530GE EDC4
• Volvo Penta TAD531GE MECH, TAD531GE EDC4
• Volvo Penta TAD720GE, TAD720VE
• Volvo Penta TAD721GE, TAD721VE
• Volvo Penta TAD722GE, TAD722VE
• Volvo Penta TAD730GE MECH, TAD730GE EDC4
• Volvo Penta TAD731GE MECH, TAD731GE EDC4
• Volvo Penta TAD532GE EDC4
• Volvo Penta TAD732GE EDC4
• Volvo Penta TAD733GE EDC4
• Volvo Penta TD520GE
• Volvo Penta TD720GE